The results of the Czech chemical industry in 2015 were aﬀ ected by the development of both external and internal factors. The exogenous factors included especially the continuation of the positive trends in the European and global economies, and low crude oil prices. Internal factors mainly comprised the accident of the ethylene unit in Záluží in August 2015. The domestic consumption of chemical industry products decreased year-on-year in 2015 by 2 % to CZK 712.7 bn (in 2014 – CZK 727.1 bn). Turnover is given by sales for domestic trade and export. Production volume can be derived from constant price sales dynamics.